260155452665 has 4 divisors (see below), whose sum is σ = 312186543204. Its totient is φ = 208124362128.

The previous prime is 260155452647. The next prime is 260155452679. The reversal of 260155452665 is 566254551062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79778567401 + 180376885264 = 282451^2 + 424708^2 .

It is a cyclic number.

It is not a de Polignac number, because 260155452665 - 2¹⁰ = 260155451641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26015545262 + ... + 26015545271.

It is an arithmetic number, because the mean of its divisors is an integer number (78046635801).

Almost surely, 2^260155452665 is an apocalyptic number.

It is an amenable number.

260155452665 is a deficient number, since it is larger than the sum of its proper divisors (52031090539).

260155452665 is an equidigital number, since it uses as much as digits as its factorization.

260155452665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52031090538.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 260155452665 in words is "two hundred sixty billion, one hundred fifty-five million, four hundred fifty-two thousand, six hundred sixty-five".